THe effect of niobium content on the hardness and elastic modulus of heat-treated ti-10mo-xnb alloys

Abstract

This study has investigated the niobium (Nb) additions effect on both microstructure and heat-treated Ti-10Mo-xNb (x = 3, 6 and 9) alloys mechanical properties. The microstructures were characterized by optical microscopy, X-ray diffraction and transmission electron microscopy. The mechanical characterization was carried out by Vickers microhardness test and Young's modulus measurements. The outcomes show that the addition of Nb in alloys decreased the proportion of ω and α' phases. The Ti-10Mo-3Nb alloy presented the best hardness and elastic modulus combination among the three developed alloys and also with respect to Ti-6Al-4V alloy and commercially pure Ti.

Influence of Nb on the β → α″ martensitic phase transformation and properties of the newly designed Ti–Fe–Nb alloys

“…According to Table 2, with an increase in Nb content of the alloys, the values of Mo eq and increase, but decreases, indicating the enhancement in the β phase stability of the metastable alloys against martensitic (β→α'') transformation [31]. The stability of β phase reaches the maximum in Ti-7Fe-11Nb alloy and no α'' martensite is formed.…”

Mechanical Characterization of Ti–12mo–13nb Alloy for Biomedical Application Hot Swaged and Aged

“…For these reasons, a number of studies have recently focused on the development of metastable β-type Ti alloys with non-toxic elements such as Mo, Zr, Sn, Ta and Nb [14][15][16][17][18][19][20][21][22][23] .…”

Microestrutura, dureza e módulo de elasticidade da liga Ti-12Mo-3Nb na condição tratada

“…Já os valores de dureza da liga Ti-6Al-4V foi de 337 HV, enquanto para a liga Ti-12Mo-3Nb foi 371 HV. Já a razão dureza por módulo de elasticidade (medida de desempenho das ligas [4]), a liga Ti-12Mo-3Nb apresentou uma razão dureza por módulo de elasticidade superior a liga comercialmente usada (Ti-6Al-4V).…”